By Mike Anderson, Senior Editor | September 28, 2010

CaterpillarOne of Caterpillar's newest mini-excavator introductions, the 303.5C CR offers a new size option between the 7,537-pound 303C CR and 10,847-pound 304C CR zero-tail-swing models rolled out in early 2006. Powered by a Mitsubishi S3Q2-T engine rated at 39 net horsepower, the 303.5C CR weighs in at 8,620 pounds equipped with a cab. With an optional long stick, the model offers a maximum dig depth of 11 feet 4 inches and a maximum horizontal reach of 18 feet 1 inch. As with the other Cat zero-tail-swingmini-excavators,the 303.5C CR hasa swing boom for digging next to walls.